I am trying to setup a VPN via this tutorial: https://www.digitalocean.com/community/tutorials/how-to-setup-your-own-vpn-with-pptp
and when I try the command: service pptpd restart it gives me this error:
service: command not found
Anyone that can help?
That guide was probably written for Ubuntu and since you're on Debian, you need to do this:
sudo systemctl restart pptpd
So we're just replace service with systemctl and then moving around in the commands.
I actually fixed my problem, You need to run sudo service pptpd restart because I think the service command is only a root command!
For Debian, sudo is what you'll want to use when running commands that would normally be executed as root. On derivatives, such as Ubuntu, unless you create a sudo user yourself, it doesn't matter and you can run with or without sudo.
That said, creating a sudo user is always advised as root should be locked and only used to initially setup the system.
This article explains the issue and the solution,
http://www.devdummy.com/2017/10/systemctl-command-not-found.html
/Sameera